polygonjs-engine/dist/src/core/geometry/util/Shape.js

node-based webgl 3D engine https://polygonjs.com

import {CoreGeometryUtilCircle} from "./Circle";
import {ShapeBufferGeometry as ShapeBufferGeometry2} from "three/src/geometries/ShapeBufferGeometry";
import {Shape as Shape2} from "three/src/extras/core/Shape";
export class CoreGeometryUtilShape {
  static geometry_from_points(positions) {
    const positions_2d = CoreGeometryUtilCircle.positions(1, positions.length);
    const shape = new Shape2();
    const first_position_2d = positions_2d[0];
    shape.moveTo(first_position_2d.x, first_position_2d.y);
    positions_2d.forEach((position_2d, i) => {
      if (i > 0) {
        shape.lineTo(position_2d.x, position_2d.y);
      }
    });
    const geometry = new ShapeBufferGeometry2(shape);
    const position_array = geometry.attributes["position"].array;
    positions.forEach(function(position, i) {
      position_array[3 * i + 0] = position.x;
      position_array[3 * i + 1] = position.y;
      position_array[3 * i + 2] = position.z;
    });
    return geometry;
  }
}